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[Xen-users] Wrong ARP reply (FE:FF:FF:FF:FF:FF)

from [Takeshi Sone]

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Subject:	[Xen-users] Wrong ARP reply (FE:FF:FF:FF:FF:FF)
From:	Takeshi Sone <ts1@xxxxxxxxxx>
Date:	Fri, 26 Oct 2007 20:52:01 +0900
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Hello,

Sometimes my dom0 network is stalled.
When it happens, the arp cache on the other machine has
FE:FF:FF:FF:FF:FF.

me@mymachine:~# arp
Address                  HWtype  HWaddress           Flags Mask            Iface
<snip>
xen1test.my.domain       ether   FE:FF:FF:FF:FF:FF   C                     eth0
<snip>


This means xen1test replies to arp with wrong mac address?

It recovers automatically when arp cache expires or doing something like
ping from the problematic dom0 and the other machine happens to pick up
the right mac address.


me@mymachine:~# arp
Address                  HWtype  HWaddress           Flags Mask            Iface
<snip>
xen1test.my.domain       ether   00:19:DB:6A:1E:29   C                     eth0
<snip>


Xen and kernel are from Ubuntu Gutsy (3.1.0).
Is this Ubuntu specific problem?
Does anybody know how to fix/workaround this?

TIA,
Takeshi

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